Grating.



A. DARROCH.

GR/mwa.

APPLICATION FILED SEPT. 5,1914.

1,150,46, Patented Aug. 17,1915.

I WIM/5885s IAF a i NGUS DAnRocH, or NEW YORK, N. Y.

GRATING.

I Specication of Letters Patent.

Patented aug. it, rais.

Application filed September 5, 1914. Serial No. 860,479.

T all whom-'it may concern:

Be it known that I, ANGUs Dannocma vcitizen of the United States, and a resident y of the cityof New York, borough of Bi'ooklyn, in the county of Kings and State of New York, have inventeda new and Im4 vproved Grating, of -which the following is a f ull, clear, and exact description.

The invention relates to gratings, such as shown and described in the Letters Patent of the United States, No..1,092,094, granted to me on March 31, 1914. Y

The object of the invention is to provide a new and improvedgrating for use inthe roofs of subways, pavements, buildings and other structures, and arranged to prevent rain water, debris'and the like from passing through the grating, to illuminate the space below the grating by refracting light and to provide proper ventilation for the said space.

In order to accomplish the desired result, use is made of spaced grate bars and diaphanous gutters intermediate the said grate bars and arranged belowthe same to carry off water and to refract light into the space below the grating, the side edges of each gutter extending underneath adjacent grate bars vand being spaced therefrom to form ventilating spaces. n

A practical embodiment of the invention is represented 1n the accompanying draw- .ings forming a part of this specification, in

which similar charaters of reference indicate corresponding parts in all the views.

Figure 1 is a sectional perspective View of the grating; Fig. 2 is a longitudinal section of the grating; Fig. 3 is a transverse section of the same; and Fig. 4 is a perspective View of one end of one of the grate bars.

In order to form the grating, use is made of a series of grate bars A of iron or other suitable material and provided at the under,y

side of their ends with depending lugs A" adapted to rest on the fiat faces B of side supports B mounted on top of walls C of :1. subway, building or other structure and having a space below the grating.. The grate bars A are spaced apart and reversible and both faces of the grate bars are preferably grooved in a transverse direction so as to provide the desired foothold forA people walking over the grating. Bolts A2 pass through the ends of each grate bar A and K5 through the lugs A thereof to screw into the side supports BA with a view to securely fasten the grate bars A in place. Gutters D of glass or other diaphanous material are arranged intermediate adjacent grate bars A and are disposed below the same, and each end of a grate bar D fits into a correspondingly shaped Arecess B2 formed in a correspondingside support B, it being understood that the gutters D are preferably V- shape in cross section, as plainly indicated in the drawings. gutter D extend beneath the underside of adjacent grate bars A and arespaced therefrom so as to form Ventilating spaces for the escape of fou-l air from the Vspace below the grating.` It will also be noticed that any "rainwater will readily drip off the side ried oif to a suitable place of discharge. It will benoticed that by the arrangement described a sufficient tread is provided by the grate bars A for persons to walk on and at the same time the diaphanous gutters D are protected'from injury by persons walking over the grating.

In case of very heavy rains the gutters D may be unable temporarily to carry off all the rain water, and in order to prevent the overiiow water of the gutters from dropping down into the space below the grating, use is made of auxiliary or overflow gutters F of glass or similar diaphanous material and arranged below the main gutters D. The overiow gutters F' are likewise V- shaped in cross section and are spaced from the under sides of the main gutters D and supported from the same by suitable clamps G,'as plainly indicated in Figs. 1, 2 and 3. The ends of the overfiow gutters F abut against the inner faces of the side supports B. Each overiow gutter F is provided preferably at one end with drain pipes H for carrying off the overiow water to a suitable place of discharge.

By providing the side supports B with the flat faces B alternating with the recesses B2 the main gutters D can be readily placed .E into the gutterE2 of the street to be carofthe lugs A are beveled to correspond to the edges of the main gutters D thereby holding the latter securely locked in place when -fastening; the grate bars A in position on the side supports B.` l

It will be noticed that by the arrangement described the several parts can be readily assembled and a desired tread is provided for persons to walk on and at the same time refracted light can pass into the space below the grating and foul air can pass from the-said space into the outer air.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

l. A grating, comprising spaced grate bars and diaphanous main gutters intermediate the said grate'bars and below the same to carry oft1 rain water and to refract light 44into the space below the grating, the side edges of each gutter being spaced from adjacent grate bars to form Ventilating spaces.

2. A grating, comprising spaced grate bars and diaphanous main gutters intermediate the said grate bars and below the same to carry olf rain water and to refract light into the space below thegrating, the side edges of each gutter extending underneath adjacent grate bars and being Ispaced from the under side thereof to formiventilating spaces.

-3. A grating, comprisingv spaced grate bars, diaphanous main gutters intermediatethe said grate bars and below the same -to carry4 olf rain water and to refract light into the space lbelow the grating, the side edges of each gutter being spaced from' adjacent grate bars to form Ventilating spaces, and an overflow gutter of diaphanous material and extending under each main gutter and being spaced therefrom.

4. A grating, comprising spaced grate bars, diaphanous main gutters intermediate the said grate bars and below the same to carry off rain water and to retract light into the space below the grating, the .side edges of each gutter being spaced from adjacent grate bars to form Ventilating spaces, an overflow gutter of diaphanous material and extending under each main gutter and being spaced therefrom, and a drainl pipe connected with the said overflow gutter for carrying ofl overflow water.

5. A grating, comprisingside supports,

transversely extending spaced grate bars secured at their ends to the said side supports,

and main gutters intermediate adjacent grate bars and supported at their ends on the said side supports independent of the said grate bars, the side edges of each gutter, being spaced from the.under sides of` adjacent grate bars throughout their lengths vto form Ventilating spaces.

6. A grating, comprising side supports, transversely extending spaced grate bars secured at their'ends to the said side supports, main gutters intermediate adjacent grate bars and supported at their ends on the said side supports, the side edges of each gutter being spaced from the under sides of adjacent grate bars to form ventilating spaces, overflow gutters underneath the said main gutters and kparallel thereto, means for fastening the said overflow gutters to the said main gutters, and means for draining the said overflow gutters.

7. A grating, comprising side supports, transversely extending spaced grate bars secured at their ends to the said side supports, main glitters intermediate adjacent grate bars and supported at their ends on the said side supports, the side edges of each gutter being spaced from the under sides of ajacent grate bars to form, Ventilating spaces, 

